Sorry, I read the one from the /logs/edit_orders/ folder not the /logs/ folder.

This is the correct log:

[07-Mar-2014 13:27:30 UTC] PHP Fatal error: 1054:Unknown column 'p.products_quantity' in 'field list' :: SELECT `p`.`products_quantity` FROM `products` WHERE `p`.`products_id` = '531' in /home/mysite/public_html/includes/classes/db/mysql/query_factory.php on line 120

dp